1   /**
2    * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3    *
4    *
5    *
6    *
7    * The contents of this file are subject to the terms of the Liferay Enterprise
8    * Subscription License ("License"). You may not use this file except in
9    * compliance with the License. You can obtain a copy of the License by
10   * contacting Liferay, Inc. See the License for the specific language governing
11   * permissions and limitations under the License, including but not limited to
12   * distribution rights of the Software.
13   *
14   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20   * SOFTWARE.
21   */
22  
23  package com.liferay.portal.webdav.methods;
24  
25  import com.liferay.portal.webdav.Resource;
26  import com.liferay.portal.webdav.WebDAVException;
27  import com.liferay.portal.webdav.WebDAVRequest;
28  import com.liferay.portal.webdav.WebDAVStorage;
29  
30  import javax.servlet.http.HttpServletResponse;
31  
32  /**
33   * <a href="HeadMethodImpl.java.html"><b><i>View Source</i></b></a>
34   *
35   * @author Brian Wing Shun Chan
36   * @author Alexander Chow
37   */
38  public class HeadMethodImpl implements Method {
39  
40      public int process(WebDAVRequest webDavRequest) throws WebDAVException {
41          try {
42              WebDAVStorage storage = webDavRequest.getWebDAVStorage();
43              HttpServletResponse response =
44                  webDavRequest.getHttpServletResponse();
45  
46              Resource resource = storage.getResource(webDavRequest);
47  
48              int status = HttpServletResponse.SC_NOT_FOUND;
49  
50              if (resource == null) {
51                  response.sendError(
52                      HttpServletResponse.SC_NOT_FOUND, webDavRequest.getPath());
53              }
54              else {
55                  if (!resource.isCollection()) {
56                      response.setContentLength(resource.getSize());
57                  }
58  
59                  status = HttpServletResponse.SC_OK;
60              }
61  
62              return status;
63          }
64          catch (Exception e) {
65              throw new WebDAVException(e);
66          }
67      }
68  
69  }